15 Utility Patents
#18 in North Reading, MA
#6,481 in Massachusetts
#121,603 in US
#242,227 in the World
Forward Citations = 397
Company Filing History:
Safety Research & Engineering Corporation
Other
Personal Hygiene Research Associates
4. 2 out of 2
Physiological Research Associates
5. 2 out of 2
Triad Direct Incorporated
where one patent can have more than one assignee
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